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JPS57110847A - Reducing method of speed change shock in automatic speed changer - Google Patents

Reducing method of speed change shock in automatic speed changer

Info

Publication number
JPS57110847A
JPS57110847A JP18570280A JP18570280A JPS57110847A JP S57110847 A JPS57110847 A JP S57110847A JP 18570280 A JP18570280 A JP 18570280A JP 18570280 A JP18570280 A JP 18570280A JP S57110847 A JPS57110847 A JP S57110847A
Authority
JP
Japan
Prior art keywords
fuel
pipe
speed change
speed
engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP18570280A
Other languages
Japanese (ja)
Inventor
Yoshio Asayama
Kiyoharu Nakao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP18570280A priority Critical patent/JPS57110847A/en
Publication of JPS57110847A publication Critical patent/JPS57110847A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Transmission Device (AREA)

Abstract

PURPOSE: To reduce a shock at speed change, by arranging fuel feed adjusting solenoid valves, operated for a prescribed time at speed change, adjusting a feed amount of fuel at speed change and controlling speed an engine.
CONSTITUTION: Pipes 30, 32 are provided before and after a throttle 20, and a pipe 10 at a fuel feed side is connected by a pipe 33. Then solenoid valves 31, 34, stopping the passing of fuel normally steady operation, are respectively provided between the pipes 30, 33. In this way, the solenoid valve 31 is opened for a prescribed time at shift-down operation to feed fuel to a pipe 21 at an injector side regardless of an opening position of the throttle 20 increasing speed of an engine; on the contrary the solenoid valve 34 is opened for a prescribed time at shift-up operation to utilize ngative pressure in the pipe 33 generated by a gear pump 11 to drain the fuel to the pipe 10 and to decrease speed of the engine, thus connection of an input shaft to a transmission can be smoothly performed to reduce a shock at speed change operation.
COPYRIGHT: (C)1982,JPO&Japio
JP18570280A 1980-12-27 1980-12-27 Reducing method of speed change shock in automatic speed changer Pending JPS57110847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18570280A JPS57110847A (en) 1980-12-27 1980-12-27 Reducing method of speed change shock in automatic speed changer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18570280A JPS57110847A (en) 1980-12-27 1980-12-27 Reducing method of speed change shock in automatic speed changer

Publications (1)

Publication Number Publication Date
JPS57110847A true JPS57110847A (en) 1982-07-09

Family

ID=16175365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18570280A Pending JPS57110847A (en) 1980-12-27 1980-12-27 Reducing method of speed change shock in automatic speed changer

Country Status (1)

Country Link
JP (1) JPS57110847A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317836A (en) * 1976-08-02 1978-02-18 Komatsu Ltd Fuel control system
JPS5317835A (en) * 1976-08-02 1978-02-18 Komatsu Ltd Fuel control system
JPS5569738A (en) * 1978-11-09 1980-05-26 Bosch Gmbh Robert Method and device for controlling internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317836A (en) * 1976-08-02 1978-02-18 Komatsu Ltd Fuel control system
JPS5317835A (en) * 1976-08-02 1978-02-18 Komatsu Ltd Fuel control system
JPS5569738A (en) * 1978-11-09 1980-05-26 Bosch Gmbh Robert Method and device for controlling internal combustion engine

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